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quester [9]
4 years ago
5

Tammy completed the following steps to simplify the expression

Mathematics
1 answer:
Brrunno [24]4 years ago
3 0

Answer:

the third term wasn't distributed properly the -2 has to multiply by +2 = -4

Step-by-step explanation:

-5x^2y - 3xy^2 - 2(4y+2) - 2.5x^2y

-5x^2y - 3xy^2 - 8y - 4 - 2.5x^2y

-7.5x^2y - 3xy^2 - 8y - 4

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-Ms. Gorman says, “Then victory won’t lie in the blade, but in all the bridges we’ve made.” What does she mean by ‘bridges?’
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Answer:

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Step-by-step explanation:

6 0
3 years ago
The left and right page numbers of an open book are two consecutive integers whose sum is 347. Find these page numbers.
azamat

Let the first page = x

The second page would be x + 1

Add them together to equal 347

X + x + 1 = 347

Combine like terms:

2x + 1 = 347

Subtract 1 from both sides

2x = 346

Divide both sides by 2:

X = 173

The smaller page number is 173

The larger page number is 174

7 0
3 years ago
Read 2 more answers
Nancy lives in a state where sales tax is 9%. This means you can find the total cost of an item, including tax, by using the exp
Pachacha [2.7K]

9514 1404 393

Answer:

  $91.56

Step-by-step explanation:

We can simplify Nancy's cost expression to ...

  c +0.09c = c(1 +0.09) = 1.09c

The the total cost of the item of interest is ...

  (1.09)($84) = $91.56

5 0
3 years ago
John says that if one side of an inequality is 0, you don't have to reverse the inequality symbol when you multiply or divide bo
Jobisdone [24]
It doesn't matter if there is 0, you still flip the inequality symbol.
-3z <span>≥ 0
z </span>≤ 0
6 0
3 years ago
Read 2 more answers
The sales revenue goes up from 2018 to 2019 by 5%. The sales revenue in 2018 was $19,800. What was the sales revenue in 2019?
Cerrena [4.2K]

Answer: $20,790

Step-by-step explanation:

The sales revenue increased by 5% from 2018 to 2019.

The sales revenue that was increased from in 2018 is $19,800 which means that the 2019 sales revenue is 5% more than $19,800.

To find the sales revenue in 2019, do the following:

= 19,800 + (19,800 * 5%)

= 19,800 + 990

= $20,790

8 0
3 years ago
Read 2 more answers
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